%0 Journal Article %A Maciej Skwarczyński %T L²-Angles between one-dimensional tubes %J Studia Mathematica %D 1988 %P 213-233 %V 90 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4064/sm-90-3-213-233/ %R 10.4064/sm-90-3-213-233 %G en %F 10_4064_sm_90_3_213_233